有关手机中文问题传输的解决办法

服务器到客户端：
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下面代码是服务器端把字符写到Client端，经过gbEncoding()方法，所有的字符编码成：\uXXXX.

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代码:
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/**
 * Write the String data
 *
 * @param out
 * @param value
 */
public static void writeUnicode(final DataOutputStream out, final String value) throws ActionException {
 try {
  final String unicode = StringFormatter.gbEncoding( value );
  final byte[] data = unicode.getBytes();
  final int dataLength = data.length;

  System.out.println( "Data Length is: " + dataLength );
  System.out.println( "Data is: " + value );
  out.writeInt( dataLength );
  out.write( data, 0, dataLength );
 } catch (IOException e) {
  throw new ActionException( IMDefaultAction.class.getName(), e.getMessage() );
 }
}
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以下代码是gbEncoding()方法，把双字节字符转换成\uXXXX,ASIIC码在前面补00。
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/**
* This method will encode the String to unicode.
*
* @param gbString
* @return
*/
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代码:
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public static String gbEncoding( final String gbString ) {
 char[] utfBytes = gbString.toCharArray();
 String unicodeBytes = "";
 for( int byteIndex = 0; byteIndex < utfBytes.length; byteIndex ++ ) {
  String hexB = Integer.toHexString( utfBytes[ byteIndex ] );
  if( hexB.length() <= 2 ) {
   hexB = "00" + hexB;
  }
  unicodeBytes = unicodeBytes + "\\u" + hexB;
 }
 System.out.println( "unicodeBytes is: " + unicodeBytes );
 return unicodeBytes;
}
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在客户端收到服务器的数据，先将其一个一个字符解码。双字节显示正常。

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代码:
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/**
 * This method will decode the String to a recognized String
 * in ui.
 * @param dataStr
 * @return
 */
private StringBuffer decodeUnicode( final String dataStr ) {
 int start = 0;
 int end = 0;
 final StringBuffer buffer = new StringBuffer();
 while( start > -1 ) {
  end = dataStr.indexOf( "\\u", start + 2 );
  String charStr = "";
  if( end == -1 ) {
   charStr = dataStr.substring( start + 2, dataStr.length() );
  } else {
   charStr = dataStr.substring( start + 2, end);
  }
  char letter = (char) Integer.parseInt( charStr, 16 ); // 16进制parse整形字符串。
  buffer.append( new Character( letter ).toString() );
  start = end;
 }
 return buffer;
}
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客户端到服务器：
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客户端使用下面方法把手机端的字符编码成ISO-8859-1,传给服务器。
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代码:
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/**
 * write the String data
 * @param value
 * @param outData
 */
private void writeSjis(DataOutputStream outData, String value) {
 try {
  byte[] data = null;
//  data = ( value ).getBytes( "UTF-8" );
  data = ( value ).getBytes( "ISO8859_1" );
  outData.writeInt(data.length);
  outData.write(data, 0, data.length);

  System.out.println(" data.length: " + data.length);
  System.out.println(" data.value: " + value);
 } catch (Exception ex) {
  System.out.println(" write error ");
  ex.printStackTrace();
 }
}
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服务器端收到客户端字符流，是用下面方法将其转为UTF-8，以后的操作都是基于UTF-8编码。SQLServer可能会由于内吗不通有不同的变换，所以存取数据库是还要是具体的DB内码作相应的处理。

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代码:
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/**
 *
 * @param iso
 * @return
 */
public static String isoToUtf( final String iso ) {
 String utfString = iso;
 if( iso != null ) {
  try {
   utfString = new String( iso.getBytes( "ISO-8859-1" ), "UTF-8" );
  } catch ( UnsupportedEncodingException e ) {
   utfString = iso;
  }
 } else {
  utfString = "";
 }
 return utfString;
}

注：
本方法应该不是最有效的，但是只要手机支持unicode的gb2312编码，应该都可以显示正常。